Step 1: Divide the number into separate digits:
67792 => 6 7 7 9 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
6 to 7 = 1
7 to 7 = 0
7 to 9 = 2
9 to 2 = 7
2 to 6 = 4
Step 3: Combine the filters to a string:
1 0 2 7 4 = 10274